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Jafri, S.I.H. & M.A. Mahar. (2006). Lamproglena notopterai sp. nov. of a copepod parasite from a freshwater fish of (Sindh) Pakistan. Bangladesh Journal of Fisheries Research. 10(1):41-44.
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Jafri, S.I.H. & M.A. Mahar
2006
Lamproglena notopterai sp. nov. of a copepod parasite from a freshwater fish of (Sindh) Pakistan.
Bangladesh Journal of Fisheries Research
10(1):41-44.
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The study was conducted at the Central Experimental Station, Philippine Rice Research Institute, Maligaya, Science City of Munoz, Nueva Ecija, Philippines during the wet season to determine the suitable stocking density(s) for better growth and yield of fish under rice-fish production systems. Recovery rate of GIFT tilapia in different stocking densities ranged from 75.74 to 83.47%. Among different treatments, rice +5,000 fingerlings/ha and rice +10,000 fingerlings/ha resulted in the highest recovery rate of 83.33% and 83.47%, respectively. The lowest recovery rate of 75.75% was obtained from rice +20,000 fingerlings/ha, but similar to that was obtained (78.56%) from rice +15,000 fingerlings/ha. Significantly higher rate of gain in body weight and that of specific growth rate were recorded in the treatment from rice +5,000 fingerlings/ha, while other treatments resulted in similar absolute and specific growth rate. Fish yield increased significantly with relatively higher stocking densities, but higher densities produced maximum number of smaller fishes and also lower recovery rate.
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